US11958974B2ActiveUtilityA1

Rejuvenation of vacuum tower bottoms through bio-derived materials

90
Assignee: UNIV IOWA STATE RES FOUND INCPriority: Feb 29, 2016Filed: Jan 4, 2021Granted: Apr 16, 2024
Est. expiryFeb 29, 2036(~9.6 yrs left)· nominal 20-yr term from priority
Inventors:Ronald Christopher WilliamsJoseph H. PodolskyNacu HernandezEric W. Cochran
C08L 95/00E01C 7/187E01C 7/22E01C 7/262C08L 2555/52C08L 2555/64C08L 2555/84Y02A30/30
90
PatentIndex Score
1
Cited by
224
References
36
Claims

Abstract

The present invention relates to an asphalt product. The asphalt product includes an asphalt binder and a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil, where the bio-oil blend is mixed with the asphalt binder to form an asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. The present invention further relates to methods of producing an asphalt product and methods of applying an asphalt product to a surface.

Claims

exact text as granted — not AI-modified
What is claimed: 
     
       1. A method of producing an asphalt product comprising:
 providing an asphalt binder, wherein the binder is a vacuum tower distillation bottom; 
 providing a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil; and 
 mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. 
 
     
     
       2. The method of  claim 1 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. 
     
     
       3. The method of  claim 1 , wherein the asphalt product has a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. 
     
     
       4. The method of  claim 1 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. 
     
     
       5. The method of  claim 1 , wherein the asphalt product comprises from 0.1 to 10.0 wt. % of the bio-oil blend. 
     
     
       6. The method of  claim 1 , wherein the bio-oil is from an oil derived from a source selected from the group consisting of fish, animal, vegetable, synthetic and genetically-modified plant oils, and mixtures thereof. 
     
     
       7. The method of  claim 6 , wherein the bio-oil is a vegetable oil from a vegetable source selected from the group consisting of high erucic acid rapeseed, soybean, safflower, canola, castor, sunflower, palm, and linseed oil. 
     
     
       8. The method of  claim 1 , wherein the bio-oil blend is a mixture of heat-bodied linseed oil (HBL) and partially hydrogenated heat-bodied linseed oil (PHBL). 
     
     
       9. The method of  claim 7 , wherein the linseed oil is a partially hydrogenated heat-bodied linseed oil (PHBL). 
     
     
       10. The method of  claim 1 , wherein the asphalt product has a specific gravity of 1.019-1.052. 
     
     
       11. The method of  claim 1  further comprising:
 blending a mineral aggregate with said improved asphalt product. 
 
     
     
       12. The method of  claim 11 , wherein the mineral aggregate is selected from the group consisting of sand, gravel, limestone, quartzite, and crushed stone. 
     
     
       13. The method of  claim 1 , wherein the asphalt product is in the form of asphalt concrete. 
     
     
       14. The method of  claim 1 , wherein the asphalt product is in the form of an asphalt mixture. 
     
     
       15. The method of  claim 14 , wherein the asphalt mixture comprises:
 a fiberglass; and 
 a mineral aggregate including at least one of lime dust and granular ceramic material. 
 
     
     
       16. The method of  claim 1 , wherein the asphalt binder further comprises a carboxyl additive. 
     
     
       17. The method of  claim 1 , wherein the asphalt binder further comprises a styrene-butadiene type polymer. 
     
     
       18. The method of  claim 1 , wherein the mixing is carried out in a high speed shear mill at 150° C. to 160° C. 
     
     
       19. A method of applying an asphalt product to a surface, said method comprising:
 (a) providing an asphalt binder, wherein the binder is a vacuum tower distillation bottom; 
 (b) providing a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil; 
 (c) mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.; 
 (d) heating the improved asphalt product to a temperature of 145° C. to 155° C.; 
 (e) coating mineral aggregate with the heated asphalt product to produce an asphalt material which has improved rheological properties compared to that of an asphalt material absent the bio-derived material; 
 (f) applying the heated asphalt material to a surface to be paved to form an applied paving material; and 
 (g) compacting the applied paving material. 
 
     
     
       20. A method of producing an asphalt product comprising:
 providing an asphalt binder; 
 providing a bio-oil blend comprising a mixture of a non-hydrogenated heat bodied bio-oil and a partially hydrogenated heat bodied bio-oil; and 
 mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. 
 
     
     
       21. The method of  claim 20 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. 
     
     
       22. The method of  claim 20 , wherein the asphalt product has a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. 
     
     
       23. The method of  claim 20 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. 
     
     
       24. The method of  claim 20 , wherein the asphalt product comprises from 0.1 to 10.0 wt. % of the bio-oil blend. 
     
     
       25. The method of  claim 20 , wherein the bio-oil is from an oil derived from a source selected from the group consisting of fish, animal, vegetable, synthetic and genetically-modified plant oils, and mixtures thereof. 
     
     
       26. The method of  claim 25 , wherein the bio-oil is a vegetable oil from a vegetable source selected from the group consisting of high erucic acid rapeseed, soybean, safflower, canola, castor, sunflower, palm, and linseed oil. 
     
     
       27. The method of  claim 20 , wherein the bio-oil blend is a mixture of heat-bodied linseed oil (HBL) and partially hydrogenated heat-bodied linseed oil (PHBL). 
     
     
       28. The method of  claim 20 , wherein the asphalt product has a specific gravity of 1.019-1.052. 
     
     
       29. The method of  claim 20  further comprising:
 blending a mineral aggregate with said improved asphalt product. 
 
     
     
       30. The method of  claim 20 , wherein the asphalt product is in the form of asphalt concrete. 
     
     
       31. The method of  claim 20 , wherein the asphalt product is in the form of an asphalt mixture. 
     
     
       32. The method of  claim 31 , wherein the asphalt mixture comprises:
 a fiberglass; and 
 a mineral aggregate including at least one of lime dust and granular ceramic material. 
 
     
     
       33. The method of  claim 20 , wherein the asphalt binder further comprises a carboxyl additive. 
     
     
       34. The method of  claim 20 , wherein the asphalt binder further comprises a styrene-butadiene type polymer. 
     
     
       35. The method of  claim 20 , wherein the mixing is carried out in a high speed shear mill at 150° C. to 160° C. 
     
     
       36. A method of applying an asphalt product to a surface, said method comprising:
 (a) providing an asphalt binder; 
 (b) providing a bio-oil blend comprising a mixture of a non-hydrogenated heat bodied bio-oil and a partially hydrogenated heat bodied bio-oil; 
 (c) mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.; 
 (d) heating the improved asphalt product to a temperature of 145° C. to 155° C.; 
 (e) coating mineral aggregate with the heated asphalt product to produce an asphalt material which has improved rheological properties compared to that of an asphalt material absent the bio-derived material; 
 (f) applying the heated asphalt material to a surface to be paved to form an applied paving material; and 
 (g) compacting the applied paving material.

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